# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.

########################################################################
# OPENAPI-URI: /api/ci/queue
########################################################################
# get:
#   responses:
#     '200':
#       content:
#         application/json:
#           schema:
#             $ref: '#/components/schemas/Timeseries'
#       description: 200 Response
#     default:
#       content:
#         application/json:
#           schema:
#             $ref: '#/components/schemas/Error'
#       description: unexpected error
#   security:
#   - cookieAuth: []
#   summary: Shows email sent over time
# post:
#   requestBody:
#     content:
#       application/json:
#         schema:
#           $ref: '#/components/schemas/defaultWidgetArgs'
#   responses:
#     '200':
#       content:
#         application/json:
#           schema:
#             $ref: '#/components/schemas/Timeseries'
#       description: 200 Response
#     default:
#       content:
#         application/json:
#           schema:
#             $ref: '#/components/schemas/Error'
#       description: unexpected error
#   security:
#   - cookieAuth: []
#   summary: Shows CI queue over time
#
########################################################################


"""
This is the CI queue timeseries renderer for Kibble
"""

import json
import time
import hashlib


def run(API, environ, indata, session):

    # We need to be logged in for this!
    if not session.user:
        raise API.exception(403, "You must be logged in to use this API endpoint! %s")

    now = time.time()

    # First, fetch the view if we have such a thing enabled
    viewList = []
    if indata.get("view"):
        viewList = session.getView(indata.get("view"))
    if indata.get("subfilter"):
        viewList = session.subFilter(indata.get("subfilter"), view=viewList)

    # We only want build sources, so we can sum up later.
    viewList = session.subType(["jenkins", "travis", "buildbot"], viewList)

    dateTo = indata.get("to", int(time.time()))
    dateFrom = indata.get(
        "from", dateTo - (86400 * 30 * 6)
    )  # Default to a 6 month span

    interval = indata.get("interval", "month")

    ####################################################################
    ####################################################################
    dOrg = session.user["defaultOrganisation"] or "apache"
    query = {
        "query": {
            "bool": {
                "must": [
                    {"range": {"time": {"from": dateFrom, "to": dateTo}}},
                    {"term": {"organisation": dOrg}},
                ]
            }
        }
    }
    # Source-specific or view-specific??
    if indata.get("source"):
        viewList = [indata.get("source")]

    query["query"]["bool"]["must"].append({"term": {"sourceID": "x"}})

    timeseries = []
    for source in viewList:
        query["query"]["bool"]["must"][2] = {"term": {"sourceID": source}}

        # Get queue stats
        query["aggs"] = {
            "timeseries": {
                "date_histogram": {"field": "date", "interval": interval},
                "aggs": {
                    "size": {"avg": {"field": "size"}},
                    "blocked": {"avg": {"field": "blocked"}},
                    "building": {"avg": {"field": "building"}},
                    "stuck": {"avg": {"field": "stuck"}},
                    "wait": {"avg": {"field": "avgwait"}},
                },
            }
        }
        res = session.DB.ES.search(
            index=session.DB.dbname, doc_type="ci_queue", size=0, body=query
        )

        for bucket in res["aggregations"]["timeseries"]["buckets"]:
            ts = int(bucket["key"] / 1000)
            bucket["wait"]["value"] = bucket["wait"].get("value", 0) or 0
            if bucket["doc_count"] == 0:
                continue

            found = False
            for t in timeseries:
                if t["date"] == ts:
                    found = True
                    t["queue size"] += bucket["size"]["value"]
                    t["builds running"] += bucket["building"]["value"]
                    t["average wait (hours)"] += bucket["wait"]["value"]
                    t["builders"] += 1
            if not found:
                timeseries.append(
                    {
                        "date": ts,
                        "queue size": bucket["size"]["value"],
                        "builds running": bucket["building"]["value"],
                        "average wait (hours)": bucket["wait"]["value"],
                        "builders": 1,
                    }
                )

    for t in timeseries:
        t["average wait (hours)"] = int(t["average wait (hours)"] / 360) / 10.0
        del t["builders"]

    JSON_OUT = {
        "widgetType": {
            "chartType": "line",  # Recommendation for the UI
            "nofill": True,
        },
        "timeseries": timeseries,
        "interval": interval,
        "okay": True,
        "responseTime": time.time() - now,
    }
    yield json.dumps(JSON_OUT)
